Just got a Pixco focal reducer ( lens turbo ) for my Minolta lenses. Cost was $115.00 shipped from China. I did a quick comparison using my Minolta Rokkor 50mm 1.4 on my NEX-7 to get a sense for any improvement in light and difference in Field of View. I took the photos from the same spot and only adjusted the focus after switching adapters. All photos were taken wide open @ f/1.4 and @ISO 400 and shot in RAW converted to JPEG in Lightroom with no adjustments. First image is the Minolta 50mm with a standard (no glass) MD to E-mount adapter. Next with the Pixco focal reducer. Second image again with the Minolta 50mm and standard MD to E-mount adapter. now with the Pixco adapter. Initial impressions are what I was expecting. Wider field of view and more light. This was a quick test but overall impressed with the Pixco. Carrying the Minolta with both adapters would essentially give me 2 primes. A 50mm f/1.4 and the aps-c equivalent of about a 35mm maybe a stop faster (actually like a 33mm f/1.2), which I think is pretty cool! Since I shot these wide open it was difficult to judge any loss of sharpness. My next test will be to shoot at different apertures and ISO. I may also compare the difference when shooting video. So until I step up to a FF camera ( if I ever do ), this seems like a nice and cheap alternative; at least for my MD mount lenses.